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Message-ID: <7890e200-4a40-5e1e-3a62-21f30d92d5c5@Shaw.ca>
Date: Tue, 7 Feb 2023 12:01:18 -0700
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Subject: Re: Parameter expansion stopped working in recent ash/dash
Content-Language: en-CA
To: cygwin AT cygwin DOT com
References: <1552195602 DOT 20230207150759 AT yandex DOT ru>
 <230ea647-5228-46e1-f6cb-954db39d20c2 AT Shaw DOT ca>
Organization: Inglis
In-Reply-To: <230ea647-5228-46e1-f6cb-954db39d20c2@Shaw.ca>
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From: Brian Inglis via Cygwin <cygwin AT cygwin DOT com>
Reply-To: cygwin AT cygwin DOT com
Cc: Brian Inglis <Brian DOT Inglis AT Shaw DOT ca>, Andrey Repin <anrdaemon AT yandex DOT ru>
Errors-To: cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com
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On 2023-02-07 10:19, Brian Inglis via Cygwin wrote:
> On 2023-02-07 05:07, Andrey Repin via Cygwin wrote:
>> Greetings, All!
>>
>> In the attached script, that I always run using dash, the expansion is
>> supposed to strip leading/trailing spaces from provided parameter.
>>
>> The upgrade that took place after which the expansion stopped working is
>>
>> libsolv:   - dash-0.5.11.5-1.any -> dash-0.5.12-1.any
>>
>> Downgrading to 0.5.11.5 restored the expected behavior.
>> I failed to find anything relevant in the dash 0.5.12 patch notes, but perhaps
>> community could help?
> 
> Good catch Andrey,
> 
> Looks like something in dash broke space trimming of any sort: see attached 
> script and logs.
> 
> I will see what upstream has to say for themselves, or about Cygwin.

Sorry Andrey,

Stupid errors in test script, didn't actually run trim3 anyway, redone, and that 
and updated logs attached.

It appears the locale dependent [[:space:]] regexp no longer works but using 
escapes generated by echo still does, see corrected trim3, so perhaps use those 
for now, if you can, while I follow this upstream.

You may need to add escape sequences for any locale dependent spacing characters 
to the space string, so please let us know if there are.

-- 
Take care. Thanks, Brian Inglis			Calgary, Alberta, Canada

La perfection est atteinte			Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter	not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer	but when there is no more to cut
			-- Antoine de Saint-Exupéry
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